e.g. for functional trousers, a T-shirt, underpants, a pair of socks. The part is used on the ship 2 to 3 times a week, for 8 months of the year. Fill halfway with water, a little detergent, then shake, rub, wait, shake, rub, wait, rinse twice, dry. There is certainly a machine for larger items (jeans, bed linen). Finds its place on every ship or backpack.